Paradyne 727 manual Troubleshooting 1 Symptom Possible Cause Solutions

Page 46

Messages and Troubleshooting

Troubleshooting

This DSU is designed to provide you with many years of trouble-free service. If a problem occurs, however, refer to Table 6-2 for possible solutions.

Table 6-2. Troubleshooting (1 of 2)

Symptom

Possible Cause

Solutions

 

 

 

Alarm LED is on.

One of several alarm

Refer to Health and Status

 

conditions exists. Health

Messages, Table 4-2, for

 

and Status displays the

recommended action.

 

alarm condition.

 

 

 

 

 

 

Cannot access the

The terminal is not set up

1.

Check the cable and

DSU via the ATI.

for the correct rate or data

 

connections.

 

format, or the DSU is

2.

Set up your terminal or PC

 

configured so it prevents

 

 

emulation as shown in

 

access.

 

 

 

Connecting to the Terminal Port

 

 

 

 

 

 

in Chapter 2.

 

 

3.

Power the DSU on and off and

 

 

 

try again.

 

 

 

 

Device Fail appears

The DSU detects an

H

Power the DSU off and on and

on the System and

internal hardware failure.

 

try again.

Test Status screen

 

H

Contact your service

under Self-Test

 

 

 

representative.

results.

 

 

 

 

 

 

 

 

An LED is not lit.

LED is burned out.

Run the Lamp test. If the LED in

 

 

question does not flash with the

 

 

other LEDs, then contact your

 

 

service representative.

 

 

 

No power, or the

The power cord is not

Check that the power cord is

LEDs are not lit.

securely plugged into the

securely attached at both ends.

 

wall receptacle and into the

 

 

 

rear panel connection.

 

 

 

 

 

 

 

The wall receptacle has no

H

Check the wall receptacle power

 

power.

 

by plugging in some equipment

 

 

 

that is known to be working.

 

 

H

Check the circuit breaker.

 

 

H

Verify that your site is not on an

 

 

 

energy management program.

 

 

 

 

Power supply has failed.

Replace power supply.

7510-A2-GB20-00

March 1997

6-3

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Contents Area Code Change Model 7510 DSU Copyright  1997 Paradyne Corporation All rights reserved Contents Monitoring the DSU Technical Specifications Glossary Index Document Purpose and Intended Audience About This GuideDocument Summary Product-Related Documents Model 7510 DSU Startup InstructionsModel 7510 DSU Features About the DSUFrame Typical DSU ConfigurationsRouter Router Relay NetworkModem User InterfacesRear Panel Interfaces TerminalUsing the Asynchronous Terminal Interface Connecting to the Terminal PortSelect Initiating an ATI SessionMain Menu What Affects Screen Displays Status Test Configuration Control Load FromScreen Format Types Use the screen formatScreen Work Areas Data Port OptionsKeyboard Keys Navigating the ScreensPress Screen Function Keys For the screen Select Press Return to FunctionExample Switching to the Screen Function Key AreaNetwork Tests Ending an ATI Session Main Menu → Control → Device Name Customizing the DSUIdentifying the Device and System Device NameSaving Configuration Options If you select ThenAccessing and Displaying Configuration Options Configuring the DSUConfiguration Option Areas Configuration Option Area Configuration Option SetMonitoring the DSU What to MonitorMain Menu → Status → System and Test Status Viewing System and Test StatusSystem and Test Status Health and Status SELF-TEST Results Health and Status HhhmmssSelf-Test Results Self-Test Results Messages What Message Indicates What To DoTest Status Messages Test Status Messages MeaningViewing Network Interface Status Main Menu → Status → Network Interface StatusViewing Network Performance Statistics Network Performance StatisticsMain Menu → Status → Display LEDs Alarm Test DM OOS OOF NS TXD RXD RTS CTS DTRMonitoring the LEDs Display Leds System NetworkAlarm System LEDsNS ± No Signal DM ± Data ModeOOS ± Out of Service Network LEDsPort LEDs Main Menu → Test TestingAccessing the Test Menu TestDevice Messages Loopback Type Initiated By Network Interface Options , Table A-2Running Network Tests Main Menu → Test → Network TestsCSU or External Network Loopback DSU or Internal Network Loopback Send V.54 Up/Down SequencesTest Pattern for the Network Main Menu → Test → Data Port Tests Running Data Port TestsData Port Tests Local Loopback Test Pattern for the DTERunning the Lamp Test Main Menu → Test → Lamp TestEnding an Active Test Responding to Device Messages Messages and TroubleshootingMessages and Troubleshooting Device Messages 1 What Message Indicates What To DoDevice Messages 2 What Message Indicates What To Do Troubleshooting Troubleshooting 1 Symptom Possible Cause SolutionsMain Menu → Control → Reset Device Resetting the DSUTroubleshooting 2 Symptom Possible Cause Solutions Displaying DSU Identity InformationOverview Configuration Option TablesSelect To Access To Configure Status Load Edit/Display TestSystem Options Menu Operating ModeLads Timing Possible Settings Internal, External, Receive Table A-1. System Options 1Lads Line Rate Kbps Test TimeoutTable A-1. System Options 2 Test Duration minNetwork-initiated DSU Loopback 64K CC Network Interface Options MenuTable A-2. Network Interface Options Data Scrambling 64K CCInvert Transmit Clock Data Port Options MenuTable A-3. Data Port Options 1 Bilateral LoopbackCarrier Control by RTS Table A-3. Data Port Options 2Rlsd Control Table A-3. Data Port Options 3 Inactivity TimeoutTerminal Port Options Table A-4. Terminal Port Options 1Table A-4. Terminal Port Options 2 Disconnect TimeminutesConfiguration Option Settings Configuration WorksheetsWorksheets Network Interface Cables and Pin Assignments Terminal Port EIA-232 Connector Signal Direction Pin #Signal User Data Port ConnectorDirection Pin Socket Connector Standard EIA-232-D Crossover Cable PinRJ48S DDS Network Interface Cable Functions Circuit Pin # LAN Adapter Converter and CableModular RJ48S DDS Network Interface Cable Cable Plug to Modular Jack LAN AdapterTechnical Specifications Table D-1. Model 7510 DSU Technical Specifications 1Network Compatibility Table D-1. Model 7510 DSU Technical Specifications 2Network Interface DTE Data Port InterfaceGlossary Excessive BPV Factory defaultsEIA-232 Frame relayNode ResetMultiplexing Non-latchingIndex NumbersIN-2 IN-3

727 specifications

The Paradyne 727 is a cutting-edge piece of networking equipment that stands out for its robust performance and versatility in various technological environments. Designed primarily as a digital subscriber line (DSL) modem, the Paradyne 727 has gained significant traction among service providers looking to enhance their broadband offerings for residential and business customers.

One of the main features of the Paradyne 727 is its ability to support both Asymmetric Digital Subscriber Line (ADSL) and Very-high-bit-rate Digital Subscriber Line (VDSL) technologies. This dual compatibility allows for flexible deployment in different network infrastructures, whether in urban areas with high demand for broadband or in rural areas where DSL remains a feasible option. The device is capable of delivering high-speed internet access with downstream rates that can reach up to 24 Mbps for ADSL and up to 50 Mbps for VDSL, ensuring faster connectivity for users.

The Paradyne 727 is also equipped with advanced modulation technologies, such as discrete multitone modulation (DMT), which provides a superior noise immunity and allows for higher data rates over traditional DSL technologies. This capability makes it particularly beneficial in environments with varied signal quality. Moreover, the modem features an auto-sensing capability that helps it adjust to the best transmission parameters automatically, simplifying installation and maintenance for service providers.

Another significant characteristic of the Paradyne 727 is its user-friendly design. The device incorporates an intuitive web-based management interface that allows network administrators to efficiently monitor performance metrics, configure settings, and perform troubleshooting from a centralized location. This feature streamlines operations and minimizes downtime, which is crucial in maintaining service quality and customer satisfaction.

In addition to its performance and management features, the Paradyne 727 is built with security in mind. It supports both local authentication and RADIUS authentication, providing robust access control mechanisms to protect sensitive data and ensure that only authorized users can access the network. This emphasis on security contributes to the modem's appeal in enterprise settings, where data integrity is paramount.

With its comprehensive features, advanced technologies, and commitment to performance and security, the Paradyne 727 is a significant player in the world of broadband networking. Its adaptability makes it suitable for a wide range of applications, supporting the growing demand for high-speed internet access across various market segments.
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